SQL Server 2014 :: Why Don't Bulk Imports TABLOCK By Default
Jul 2, 2014
I've been reading about the "table lock on bulk load" option and TABLOCK hint.
So my understanding is by default only row locks are taken out and other queries can read/write data while the bulk load is going on. However if you were doing parallel bulk loads with overlapping keys from a clustered index then they may block each other.
But if the option is enabled, you can do the parallel bulk loads without blocking because a table lock is taken out, however, other processes couldn't read/write the data until they're all done.
Is that the gist of it? I think I got confused by some misinformation. Don't all those row locks eventually likely escalate to a table lock anyway though?
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Apr 28, 2008
I got anywhere from a couple hundred to a hundred thousand records that need to be updated or inserted into their SQL Server 2005 end destination. What are some of the best ways to accomplish this? Right now we are doing it manually through line by line updates and inserts. Would I use BC or some other bulk import tool?
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Jun 19, 2014
I found loads of things but nothing seems to work...
I'm trying to get a link with XML data inside the page into a table but I can't find anything
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Jul 29, 2014
I need to load the following data into a SQL table. This is how the vendor is able to provide it to us.
CRCorp Daily Report,,,,,,
,,,,,,
Facility,Location,Purchase Order #,Vendor,Inventory #,Date Ordered,Extended Cost
09-Mowtown 495 CRST,09-402A Women's Imaging,327937,"BARD PERIPHERAL VASCULAR, INC.",113989,7/25/2014,650
09-Mowtown 495 CRST,09-402A Women's Imaging,327936,"WB MASON CO., INC.",112664,7/25/2014,8.64
01-Mowtown 499 CRST,01-302B Oncology,327947,McKesson General Medical,n/a,7/25/2014,129.02
[Code] ....
I have attempted to bulk insert it into this table with no luck.
CREATE TABLE POMaster
(Facility VARCHAR(75),
Location VARCHAR(75),
PONum INT,
VendorNm INT,
INVENTORYNUM VARCHAR(25),
orderDte DATE,
ExtendedPrice NUMERIC(10,2)
)
GO
It does not like the double quotes. How to make this format work? Do I need a format file?
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Jul 22, 2015
I'm testing, with SQL 2014 on the same DB, a procedure that extracts data from a table into a file and Loads data from that file into a different table which has the same columns as the initial table (I use a function to create the create table statement from the source table and change the name of the destination table)
when doing my bcp -c the record with the special character "é" doesn't make it to the file.
when doing a bcp -w the record with the special character makes it to the file but the bulk insert omits the whole record.
The result file in the case that makes it to the file is unicode. I'm not using a format file (don't see the need for it)
The bulk insert into the destination table that contains identical columns as the source (a mixture on int, varchar, char) --> didn't work
I also tried by building the columns of the destination table with nvarchars -- Still doesn't work.
I tried the bulk insert with:
codepage = 'ACP, 'RAW' --> didn't change anything. still didn't work.
It's a complicated process that takes 1 XML record that contains information + the Create Table Statement (to eventually be able to this on a different server/DB) + the title Row for each column + the Data... Each of these are created with a BCP command (all with the same options). they are then appended to each other with a copy /B c:file1.txt + c:File2.txt + c:File3.txt + c:File4.csv c:ResultFile
Once the result file is created I bulk insert the 2 first rows in one table "TableA"
create the tmp table "TABLE B" with the create table statement that is in "TableA"
and do another bulk insert of the remainder of the file into the newly created table.
What else can I try? Should I be creating a format file? what are the benefits of a format file?
It's a very long procedure that does both Extract and Load (with 12 parameters) not sure what I should put here.
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Apr 20, 2015
I want to set a default value to a column while adding it.
Create table test(id int )
insert into Test values(123)
alter table test add column2 int default(0)
In the above query I have set the default value, but it will not set the default value to the already inserted columns.
So how to set a default value for the already inserted rows, while adding a new column to it ?
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Jul 29, 2015
I wasn't sure where to put this topic so I put it here since I figured it is a question that would apply to virtually any version even though I am using SQL Server 2005.
We have a vendor that sends us a fixed width text file every day that needs to be imported to our database in 3 different tables. I am trying to import all of the data to a staging table and then plan on merging/inserting select data from the staging table to the 3 tables. The file has 77 columns of data and 20,000+ records. I created an XML format file which I sampled below:
<?xml version="1.0"?>
<BCPFORMAT xmlns="http://schemas.microsoft.com/sqlserver/2004/bulkload/format" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<RECORD>
<FIELD ID="RetNo" xsi:type="CharFixed" LENGTH="6"/>
[Code] ....
The data file is a fixed width file with no column delimiters or row delimiters that I can tell. When I run the following insert statement I get the error below it.
BULK INSERT myStagingTable
FROM '.........myDataSource.txt'
WITH (
FORMATFILE = '.........myFormatFile.xml',
ERRORFILE = '.........errorlog.log'
);
Here is the error:
Msg 4832, Level 16, State 1, Line 1
Bulk load: An unexpected end of file was encountered in the data file.
Msg 7399, Level 16, State 1, Line 1
The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.
Msg 7330, Level 16, State 2, Line 1
Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".
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Jan 13, 2014
If I install an instance with Windows Only authentication, and then change it to Mixed Mode, if I enable the sa login, the password has already been set. What is the default? If it's generated, how secure is it? Is the password generated? What algorithm is used for that?
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Aug 26, 2014
Plan to setup AG on in both default and named instance of two nodes. Can we do it ?
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Mar 10, 2015
I am tasked with correcting 600 SQL Server instances default settings. I would like to use powershell, if possible to loop thorough each named instances (I have a list) and apply the following settings. I also need to query the server for the installed memory and apply * 80% logic for maxmem, and look at the VCPU count and adjust the MAXDOP to that number.
USE MASTER
GO
EXEC sp_configure 'recovery interval (min)', '0';
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'allow updates', '0';
RECONFIGURE WITH OVERRIDE;
EXEC sp_configure 'user connections', '0';
[code].....
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Mar 25, 2015
How can you install the System Databases to a drive other than the default?
I want the Data Files to be installed on D:MSSQLData and the log files to be stored on D:MSSQLLog.
For better, quicker answers on T-SQL questions, click on the following...
[URL]
For better answers on performance questions, click on the following...
[URL]
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Dec 23, 2014
is bulk logged recovery model support point in time recovery
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Feb 27, 2008
Let me preface this request with the info that I am relatively new to sql server so I may be asking something that is rally basic, and/or is not a best practice but here goes....I need to import data from an excel spreadsheet - one of the columns may be null or may have an integer value. I'd like to replace any null values with a 1 during import so that calculations can be done with the field once the data are imported. Can someone give me an example of how to do this? I had planned to use the bulk insert option but if there's a better way please let me know. Thanks in advance for any advice.
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Oct 4, 2007
Hi all,
During a load test , we found a procedure that was causing a deadlock. In the profiler deadlock graph both the process that blocked as well as the victim where having the same object id of the procedure.
I used WITH (TABLOCK) hint and now I'm not finding the deadlocks.
Is this a right solution ?
Will this affect the functionality ?
Code piece inside the procedure when it caused deadlocks
INSERT INTO Table1
SELECT @Col1, @Col2, @Col3, @Col4
UPDATE Table1
SET Col5 = @Col5
WHERE @Col1 = @Var
UPDATE Table2
SET Col = @ColVal
Code piece changed now with WITH (TABLOCK)
INSERT INTO Table1
SELECT @Col1, @Col2, @Col3, @Col4
UPDATE Table1 WITH (TABLOCK)
SET Col5 = @Col5
WHERE @Col1 = @Var
UPDATE Table2 WITH (TABLOCK)
SET Col = @ColVal
Any suggestions would be appreciated.
Thanks,
DBLearner
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Oct 20, 2015
We currently have a large ETL import each night. There are lots of tables and some are quite large. If there is a problem with the nightly import, it is rerun during the day while users are running reports. The only updates to the tables is the nightly import.Currently the import does a BULK Insert and several INSERT INTOs. We are going to try to improve performance by adding a WITH (TABLOCK). But wonder if the TABLOCK will cause more locking, less locking, or be about the same. We do not have transactions batched. We insert all the records for a table in a single transaction.
Have found these references regarding TABLOCK, but I am confused what they mean, and how they differ from doing a BULK INSERT or INSERT INTO without TABLOCK.
TABLOCK - Specifies that a shared lock is taken on the table held until the end-of-statement. [URL] ....
Using INSERT INTO…SELECT to Bulk Load Data with Minimal Logging [URL] ....
Lock Modes [URL] ....
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May 19, 2015
SELECT from openrowset(BULK 'SERVERNAMEsomepathsomefile.csv'... fails while SELECT from openrowset(BULK 'c:somepathsomefile.csv' ... works.
I am running the task as a specific sql server user. If I run the same query in management studio using execute as login='batchuser', it also works for any path.
How can I make this work without an extra step moving the data to the local server? Because that would cause extra administration.
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Sep 25, 2015
I installed SSRS 2014 Reporting Services on a 2008R2 Enterprise server. When I try to subscribe to a report (also SQL 2014), the default rendering is MHTML. I want to change this default to EXCEL.
I updated the rsreportserver.config file and restarted SQL Server Reporting Service. Now, the default rendering for a subscription is 'XML file with report data' which is the first <Render> data element. If I change
<DefaultRenderingExtension>EXCEL</DefaultRenderingExtension> back to <DefaultRenderingExtension>MHTML</DefaultRenderingExtension>
And restart SSRS Service, the default subscription rendering is MHTML.
<DeliveryUI>
<Extension Name="Report Server Email" Type="Microsoft.ReportingServices.EmailDeliveryProvider.EmailDeliveryProviderControl,ReportingServicesEmailDeliveryProvider">
<DefaultDeliveryExtension>True</DefaultDeliveryExtension>
<Configuration>
[Code] ....
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May 28, 2015
I'm in the process of importing a series of flat files into SQL Server. I'm using a ~ to separate the columns and the row delimiter is {CR}{LF}. One of the files has a field that contains the CRLF combination in a few places so that field is split over several rows. This is readily visible when I look at the flat file. However, when I'm importing the file, the Import and Export wizard seems to ignore them and import the files as they should with one row per record.
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Aug 11, 2015
@pvColumnName VARCHAR(100) = Default,
However, I am unable to determine what is the value for Default. Is it '' ?
Default is not permitted as a constant - below fails to parse:
WHERE t2.TABLE_TYPE = 'BASE TABLE'
AND (@pvColumnName = Default OR t1.[COLUMN_NAME] Like @vColumnName)
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Feb 29, 2008
I'm created a package to import XML the are PGP encrypted from a FTP Site. What tools can be used to decode the encryption through SSIS?
Is this possible? If not what can be used to automate this process?
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Apr 21, 2008
Hi,
*** Skip all and go to last 2nd para for main question ****
We have our custom ETL tool that loads data in SS 2005 Enterprise Vesion using BCP. We use '-h "TABLOCK"' table hint and '-b 10000' batch size options.
Prior to 2005 Enterprise version (2K and 2K5 Standard Versions), we use to maintain around 10 DBs with same schema/sps and views in each of the dbs.
Now, in Enterprise version we are maintaining one DB where all tables are partitioned by one column.
Multiple instances might run from different workstations. Here, I want to clarify you that no instance will load data pertaining to another partition.
But at the same time there will be other components running that will query the tables in a SELECT sql and all tables have NOLOCK table hint.
There can be multiple instances of this component running from different workstations. Again, none of the instance will not access data pertaining to another instance (including the component that is loading data)
I have no clue why we some times get deadlock issues when we run multiple instances of custom ETL tool for loading data and other component that just has select only sql.
More over I get deadlocks many times only in BCP, this is a puzzle to me because i use NOLOCK table hint. This is the only place where table is populated by data and data in table neither updates or deleted.
Can some one tell which of these below concurrent transactions will get conflicts and leads to dead lock?
bcping data into table of partition A
bcping data into table of partition B
deleting few rows of data from table of partition E
updating few rows of data from table of partition F
querying table of partition C
querying table of partition D
Thanks
- D
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Mar 31, 2003
Hi there,
I use Asp.Net Application to upload a Excel file and then a DTS to import data from the file to the SQL2000 and finally to display the read data on the screen.
The DTS starts with setting some variables with the help of Dynamic properties.
On Succes.
DTS rum 2 simultaneous Transform Data task importing data from excel to SQL2000.
This works fine for "most" of the time, but then there are the other times.
One of the TDT(Transform Data task) reads nothing from the excel file. but it can read the data if i upload the same file again right after.
Any kind of input is welcome
Thanx
/bs26
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May 12, 2004
Looking for suggestions on this one. What I want to do have have a text file that may have any number of rows and cols (with a predefined format) that a user can update or insert into a table. The definition of the row/cols and data mapping etc, has been done, it is the mechanics of actually doing the below I would appreciate help and advice on.
As the user is an 'end-user' (and has no SQL knowledge at all) the text file to import from will be placed in a predefined location and then a small script will be executed from their PC (as it happens, it's a Mac that runs an app that can exec an SQL command on the currently open database) that will in turn run a stored proc which is then reads in (imports or updates) the appropriate tables witht he contents of the external text file.
Sorry the explanation is a bit long winded but if anyone had any practical suggestions and examples, it would be greatly appreciated.
FYI, they are running SQL 2000 on both XP Pro and W2K3 server.
Thanks
Starb
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Jul 20, 2005
Hello Specialists !Please help me - i need advice in importing textual data to SQL Server.I am using DTS with a simple process : Text(source)->Connection.I want to increase speed of importing because i have to import 4GB (1000char lines lenght) of data.Do you have any tips for me ?Best regards,Manu
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May 14, 2007
I am trying to add an Imports statement to the beggining of the custome code section of my report but I recieve this error. There is an error on line 0 of custom code: [BC30465] 'Imports' statements must precede any declarations.
My syntax looks like this:
Imports SB = System.Text.StringBuilder
Imports System.Enum
public function Test ...
end function
Does anyone know if this is even possible and why or why not?
In relation to that, can anyone answear as to why there is a 32K limit on the code section in reporting services?
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Mar 26, 2007
hours wasted what else is new with Micro --- crap try to import an excel into a table, longest field (via vba macro report) is 278 receiving DB field is 4000 get "Truncation error, I must stop I am a piece of s*** program " the only thing you can find on the web is make sure you have SQL server 2005 SP2 install it same thing and g** only knows what other problems I have just created by installing another piece of Microsoft magic generated in India or China by the best technologists making at least $5 and hour
so MVPs when is this rediculous situation going to be fixed ?? oh that's right your answer will be "go to VISTA" which won't fix my problem but will probably help your stock situation
MS owes me (conservatively) 100K ... my current plan is to install Linux get up on MySQL and NEVER deal with SHoddy half built pieces of garbage again
so where is the fix ???
when will we see it (short of buying another bloated piece of ... oh i mean Vista)
an addendum
i am trying to import 25,000 rows with approx 20 columns from Excel
i added a first column with an ID .... if I import whole table it dies on row 1852 for truncation problems
if I empty that column all goes in make other exel get rid of all rows except ID and bad row (contains web addresses eg http://www. blah blah)
import that excel it dies on row 2395 in other words the first offending cell was no problem if it was the 2cnd row instead of the 15th row
try to tell me this is not a random bug .... long live MYSQL
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May 18, 2004
Hi.
Is there anyway to export the table structures : data type,length,NULLABLE,Description into an Excel file using MS SQL Server?
Or I need to do it manually?
Thank you in advanced.
Sincerely
Agustina
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Aug 4, 2004
Hi guys,
I need to be able to send a text file with data seperated by tabs to a stored procedure that populates my table.
I am new to SQL and SPROCs that I am not sure how to even start. If you guys have any ideas I would really like to hear them or maybe any on-line docs and examples.
Thanks in advance!
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Feb 4, 2008
Hi there,
I was wondering about the stability of SSIS when it comes to importing data on a real-time basis. Let's say you have a scenario where flat files, for instance, will be dropped at random intervals ranging from 1 second to 10 seconds apart and the importer has to import these files immediately.
I would imagine that this is done with a package which runs a loop sniffing the directory forever but I stand corrected on the best ways of doing it.
I'm not too sure whether SSIS is a good idea for this as lots of people have had bad comments on SSIS in real-time in my company but they cannot elaborate on why enough to convince me. I have done some pretty cool stuff and must admit that I am a fan of the technology but dont want to defend it into a corner
Please give me your thoughts on this
Regards
Michael
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Mar 12, 2007
I'm pretty new to using SQL 2005 Management Studio. Generally speaking, it works pretty much the way I'm used to (using Enterprise Manager) as far as moving data around and designing databases is concerned. But I've been trying to import some data to my local SQL server from an online SQL database and I am getting the most bizarre results.
Basically, it appears to work perfectly, but when the import is finished, there is only one new row in the destination table.
I have tried this with two completely different online databases and I have tried importing using a query and just downloading the table as-is, but whatever happens, I just get one row! All of the databases I'm exporting from or importing into are SQL 2000 - I just happen to be using the SQL 2005 client software.
Have you heard of anything like this?
I'm appending the report to the end of this email. As you can see, it says "success, success" all the way down and it clearly states "71236 rows transferred", but when I get done, there's just one.
Any thoughts?
One explanation is that every new row is overwriting the last new row somehow, but I don't think so because the row that actually gets copied is always the first one in the record set, not the last. Unless they're being transferred in reverse order, I suppose.
I'm pretty stumped and I haven't found any useful blogs or help on the web.
Hope you can think of something because I don't have Enterprise Manager on my computer any more and it's going to be a pain to install it.
Jon
Here's the report:
The execution was successful
- Initializing Data Flow Task (Success)
- Initializing Connections (Success)
- Setting SQL Command (Success)
- Setting Source Connection (Success)
- Setting Destination Connection (Success)
- Validating (Success)
- Prepare for Execute (Success)
- Pre-execute (Success)
- Executing (Success)
- Copying to [inframes].[dbo].[sum_shop_clicks] (Success)
* 71236 rows transferred
Messages
* Information 0x402090df: Data Flow Task: The final commit for the data insertion has started.
(SQL Server Import and Export Wizard)
* Information 0x402090e0: Data Flow Task: The final commit for the data insertion has ended.
(SQL Server Import and Export Wizard)
- Post-execute (Success)
- Cleanup (Success)
Messages
* Information 0x4004300b: Data Flow Task: "component "Destination - sum_shop_clicks" (37)" wrote 71236 rows.
(SQL Server Import and Export Wizard)
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Sep 5, 2007
I have been trying to follow/implement the examples in the following help topics (thanks to Jamie for these links).
Building Packages Programmatically
(http://msdn2.microsoft.com/en-us/library/ms345167.aspx)
Connecting Data Flow Components Programmatically
(http://msdn2.microsoft.com/en-us/library/ms136086.aspx)
The problem I am having is that MainPipe is not recognized as a valid type in my Script task, even though I have the imports statements that are listed in the example. I get the message "Error 30002: Type 'MainPipe' is not defined". The other and related problem is that when I type "imports microsoft.sqlserver.dts", the intellisense offers only two choices: {}Runtime and {}Tasks. I don't see any choice for Pipeline. Can anyone tell what I am missing? It seems to be some kind of configuration/installation issue, but I have no idea how to resolve it. I have tried this on 3 different machines, with both the RTM SQL 2005 standard edition, and with SP2 installed, all with the same result. Any help is appreciated
Here is my code:
' Microsoft SQL Server Integration Services Script Task
' Write scripts using Microsoft Visual Basic
' The ScriptMain class is the entry point of the Script Task.
Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Pipeline
Imports Microsoft.SqlServer.Dts.Pipeline.wrapper
Imports Microsoft.SqlServer.Dts.
Public Class ScriptMain
Public Sub Main()
'
Dim package As Microsoft.SqlServer.Dts.Runtime.Package = _
New Microsoft.SqlServer.Dts.Runtime.Package()
Dim e As Executable = package.Executables.Add("DTS.Pipeline.1")
Dim thMainPipe As Microsoft.SqlServer.Dts.Runtime.TaskHost = _
CType(e, Microsoft.SqlServer.Dts.Runtime.TaskHost)
Dim dataFlowTask As MainPipe = CType(thMainPipe.InnerObject, MainPipe)
Dts.TaskResult = Dts.Results.Success
End Sub
End Class
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Sep 12, 2007
Hello,
I have a problem with the Import of an Excel file and hope one of you can help me out.
There is a column with mixed data (format is TEXT) in an excel file and I want to import it as Text (DT_WSTR (255)).
So far everything works fine but some fields like "9760020" imports "9.76002e+006".
My settings so far are:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=<FileName>;Extended Properties="EXCEL 8.0;HDR=NO;IMEX=1"
In addition I altered the registry entry
TypeGuessRows to 0 (ImportMixedType = Text)
Has someone got a solution?
Thankx
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May 6, 2008
Dear all,,
I need your help,,I'm work in website project using ASP.NET,,I have to register the users of this site,, the users are over 200,,so,,I'm thinking in away to save my time,,All the information of these users are stored in Excel file,,What I want to do is to imports these data from the excel file into a table in my database(SQLserver database),,Could you help in coding by VB.NETThanks in advance,,
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